Fluid pressure system



Nov. 7, 1933.

I. HARTER FLUID PRESSURE SYSTEM Filed Aug. 28, 1930 Fig 1 INVENTOR 1579 96 H9575 AIENEY 2 Sheets-Sheet 1' Nov. 7, 1933 HARTER 1.934,667

FLUID PRES SURE SYSTEM Filed Aug. 28, 1930 2 Sheets-Sheet 2 INVENTOR IS/QHC H01? 72:7?

ATTORNEY patented Nov. 7, .1931? i /L r Isaac Harter, New York, N. Y., assignor to Bailey Meter Company, a corporation of Delaware Application August 28, 1930.- Serial No. 478,524 9 Claims. (Cl. 604-1),

This invention relates to fluidpressuresystems the connection 23 and subject to variations in such, for example, as steam systems and more the temperature of the steam flowing thereparticularly to control devices for use in connecthrough. The thermostat is of standard contion therewith. struction and is connected by well known mecha- An object of this invention is to provide an nisrn to a bell-crank lever, one arm 32 of which improved control mechanism of the type set forms part of an eiectric switch 33 for controlforth, constructed and arranged to automatiling the flow-of current through lines 34 leading cally regulate the operation of an associated to a motor 35. The armature of the motor 35 system. is connected to a spur gear 3'7 which is threaded This and other objects which will be apparent to the upper portion of the valve stem 38 on 65 to those skilled in this particular art are accomwhich the valve 2'7 is mounted, through a worm plished by means of the invention illustrated in 40, worm wheel 41 and spur gear 43, the latter the accompanying drawings in which; driven by shaft 42 through a suitable clutch Fig. 1 is a diagrammatic layout of a steam sysmeans 63. tern arranged in accordance with one embodi- In g- 3 I v shown in sectional elevation 70 ment of this invention, and; and to an enlarged scale, the clutch means 63.

Fig. 2 is a transverse sectional view partly It is to be understood that the means I have disbroken away or" a control valve together with Closed is purely illustrative and any Clutch Such the associated mechanism for operating the as is known in the art may be empl yed. R

same; and Fig. 3 is a sectional elevation of a fl o F g- 3, the p gear 43 is supported 7 clutch mechanism. by a stationary collar 64 and loosely fits the The particular embodiment of the present inshaft 42. The clutch proper consists of a collar vention which has been shown for the purposes 65 p d t t shaft 42 so that While it is of illustration is shown in connection with a a d by t e S a t m y b moved longitudisteam system but it will be apparent that the n l y. Th 0 1 1 5i p vi w a pl r invention is equally applicable to other forms of of fingers 65 adapted to enter u y disposed vapor or fluid pressure systems. holes 6'7 in the spur gear 43. The fingers 66 are As illustrated, any desired source of steam 10 l Out O driving engagement W the gear 43 is connected to a steam main 23 or other conby means Of a disc 63 rotatable ahOU-t a p 9 necticn for conveying the operating steam to a Which i fastened to the'celial When it is steam consuming unit24 such as a turbine or desiredtO manually Operate h Valve thieilgh the like. the handwheel 44, the collar is held in the posi- The present invention contemplates the protion shown in Fig. 3 by the disc 68 which is moved vision of mechanism for insuring that th steam over the end of the shaft 42. When it is desired 35 delivered to the turbine comes within the desired h the v v b automatically p r the temperature range and that no steam of ith disc 68 is rotated to the position shown by dotted too high a temperature or too low a temperature line, Q that the 001151? 65 may he meved g reaches the turbine or other steam consuming (finally relative the shaft until the fingers 56 it AS m g m this mechanism includes a mesh with the holes 6'? for driving therethrough.

valve 25 inserted. in the main 23 and connected to Thereafter any motion of the shaft 42 w be a by-pass outlet 26 which may lead tea condenser transmitted to the gear 43 and consequently to 21 or any other apparatus. The valve housing 25' the Valve The switch 33 controls the flow of current f f l Valve 27 agapted to ii the through the lines 34 and, hence, the operation ow of fluid through the line 23 and either to .i i o 1 Y of the 1110-01, and the switch in turn 15 conpermit it to flow through such line to the turbine trolled through the thermostat by the tempera 24 through the valve port 23 or to close such port ture of the Steam flowing to the turbine 24 so as to open the by-pass port 29 leading to the suming the valve 2'? to be in normal operating line position as shown in full lines in Fig. 2, the therso The by-pess positionlof the valve 27 is Shown mostat is so designed that a drop in the tempera- 5 in dotted l es i i 2 While the normal positure of the steam, below a predetermined point tiOII, permitting Operation of the turbine 24 is will operate the switch 32 so as to cause current illustrated in full lines. to flow through the motor 35 to rotate gear 37 In the illustrated embodiment, the valve is 0pand raise valve 2'? to open the by-pass connection v .55; erated by means of a thermostat 30 located in 26 and close the port 28, thus shutting ofi the flow of low temperature steam to the turbine. A suitable motor cutout 39 is arranged to stop the operation of the motor when the valve 28 reaches its uppermost position. The motor cut-out illustrated consists of a finger 60 carried on the valve stem 38 and arranged to raise or lower a contact carrying rod 39 to close or open, respectively, the motor circuit. When the valve reaches its upper position, the finger 60 actuates a pivoted bar 61, loosely engaging the rod 39 to lower the rod and thereby open the motor circuit. When the valve is manually returned to its lower position, the finger 50 actuates a second bar 62, at the lower limit of movement of the finger, to raise the rod 39 to its circuit closing position, thus restoring the motor circuit switch 33. In the same way, an increase in the temperature of the steam above a predetermined point will operate the thermostat so as to move the switch lever 32 in the opposite direction so as to send current through the lines and operate the motor 35 in the manner above described. It will be understood that return of the steam temperature to the desired range operates the thermostat so as to open the switch 33. The valve 27 is returned to normal position, in which the bypass port 29 is closed and the port 28 opened, by hand, after which it will again be automatically operated to close port 28 and open the by-pass should the steam in the line 23 again be above or below the desired temperature range.

The specific details of the relay 39 and similar mechanisms have not been described in detail as any standard form of control can be employed.

WhatI claim as new, and desire to secure by Letters Patent, is: V

1. The combination with a steam consuming unit of a steam generator, a connection for conveying steam from said generator to said unit, a valve in said connection, a thermostat associated with said connection and means controlled by said thermostat for closing said valve when the temperature of said steam rises above or falls below certain predetermined points.

2. The combination with a steam consuming unit of a steam generator, a connection for conveying steam from said generator to said unit, a by-pass, a valve for opening and closing said by-pass, a thermostat subject to the steam temperature in said connection and means controlled by said thermostat for operating said valve to open said by-pass and close said connection when said temperature rises above or falls below a predetermined range.

3. The combination with a steam turbine, of a steam source, a connection for conveying steam from said source to said turbine, a by-pass, a valve for controlling the flow through said connection and said by-pass, a thermostat Subject to the temperature of steam in said connection, and means controlled by said thermostat for operating said valve to open said by-pass and close said connection when said temperature falls below a predetermined point.

4. The combination with a steam turbine, of

to the control of the' a steam generator, a connection for conveying steam from said generator to said turbine, a condenser associated with said turbine, a by-pass from said connection to said condenser, a valve for controlling flow of steam through said connection and said by-pass, a thermostat subject to the temperature of steam in said connection, and means controlled by said thermostat for operating said valve to open said by-pass and close said connection when said temperature rises above or falls below a predetermined operating range.

5. The combination, with a vapor operated mechanism, of a vapor generator, a connection for conveying vapor from said generator to said mechanism, a valve controlled bypass connection located in said vapor connection between said vapor operated mechanism and said vapor generator, and valve operating mechanism controlled by the vapor temperature in said vapor connection, adapted to operate the valve in said bypass and shut off vapor from said vapor operated mechanism when the vapor temperature reaches predetermined high and low limits. 1

SQThe combination, with a vapor operated mechanism, of a vapor generator connection for conveying vapor from said generator to said mechanism, a bypass connection located in said vapor connection between said vapor operated mechanism and said vapor generator, and means associated with said bypass connection adapted to shut off vapor from said vapor operated mechanism when the vapor temperature reaches predetermined high and low limits.

7. The combination of a vapor operated mechanism, of a vapor generator, a connection for conveying vapor from said generator to said mechanism, a valve controlled bypass connection located in said vapor connection between said vapor operated mechanism and said vapor generator, and a valve operating mechanism controlled by the vapor temperature in said vapor connection comprising a thermostatically controlled switch and an electric motor which are adapted to operate the valve in said bypass and shut off vapor from said vapor operated mechanism when the vapor temperature reaches predetermined high and low limits.

8. The combination with a steam generator, of a steam consuming device, a steam supply con duit connecting said generator and device, and mechanism for by-passing steam about said device when the steam temperature rises above or falls below a predetermined operating range.

9. The combination with a steam generator, of a steam consuming device, a steam supply conduit connecting said generator and device, a by-pass about said device, a valve controlling said conduit and by-pass, and automatic temperature responsive mechanism for opening said by-pass when the steam temperature rises above or falls below a predetermined operating range, and manually operated means for moving said valve to its bypass closing position.

ISAAC I-IARTER. 

